# Making a icosahedron

Introduction --
Making the Modules --
Making the Polyhedra --
Jim's Origami Page

The icosahedron has 20 triangular faces that meet in groups of five
at each of 12 vertices. It has 30 edges, and thus uses 30 identical
triangle (tr--tr) modules.
You can color this like the dodecahedron, with ten modules
each of three different colors. It can be colored so that all triangles
have edges of each color.

Or you can color in a way analgous to the
dodecahedron: All triangles meet in groups of five. Take five edges of
color 1, and make one vertex of the icosahedron. This will make five
incomplete triangles. Complete the triangles with color 2. Repeat this
with the remaining five modules of color one, and the remaining five
modules of color 2. Now you have made two pentagonal pyramids, which compose
the top and the bottom of the icosahedron. Use color 3 for the remaining
edges, which make a zig-zag around the middle.

## The icosahedron

*
Jim Plank ---
Jim's Origami Page*